Question 1

How do we interpret a dummy variable coefficient?

Accepted Answer

A)   The difference between two means
B)   The difference between two coefficients
C)   The difference between two R-squared values
D)   None of theseE) A) and B)
F) A) and C) A

Question 2

Which of the following is incorrect?

Accepted Answer

A)   Regression with one dummy variable (predictor)  corresponds directly to an independent analysis of variance (ANOV
A)  
B)   Regression with more than one dummy variable including a covariate corresponds directly to an independent analysis of covariance (ANVOC
A)  
C)   Regression with more than one dummy variable (predictor)  corresponds directly to an independent analysis of variance (ANOV
A)  
D)   Regression with one dummy variable (predictor)  corresponds directly to an independent t-testE) None of the above
F) C) and D) A

Question 3

What does a dummy-variable regression analysis examine?

Accepted Answer

A)   The relationship between one continuous dependent and one continuous variable
B)   The relationship between one categorical dependent and one continuous independent variable
C)   The relationship between one continuous dependent and one categorical independent variable
D)   The relationship between one continuous dependent and one dichotomous variableE) C) and D)
F) All of the above

Question 4

Which of the following procedures can be used to compare the means of the included groups in a dummy-variable regression model?

Accepted Answer

A)   Changing the reference group
B)   Linear combination
C)   Standardization
D)   Not possibleE) All of the above
F) A) and B)

Question 5

Why is the number of dummy variables to be entered into the regression model always equal to the number of groups (g)  minus 1 (g−1) ?

Accepted Answer

A)   To avoid model misspecification
B)   To increase the R-squared value
C)   To avoid the situation of perfect multicollinearity
D)   To control other variables in the modelE) A) and C)
F) C) and D) C

Exam 5: Dummy-Variable Regression

How do we interpret a dummy variable coefficient?

Correct Answer
verified
A

Which of the following is incorrect?

Correct Answer
verified
A

What does a dummy-variable regression analysis examine?

Correct Answer
verified

Which of the following procedures can be used to compare the means of the included groups in a dummy-variable regression model?

Correct Answer
verified

Why is the number of dummy variables to be entered into the regression model always equal to the number of groups (g) minus 1 (g−1) ?

Correct Answer
verified
C

Exam 5: Dummy-Variable Regression

How do we interpret a dummy variable coefficient?

Correct AnswerverifiedA

Which of the following is incorrect?

Correct AnswerverifiedA

What does a dummy-variable regression analysis examine?

Correct AnswerverifiedShow Answer

Which of the following procedures can be used to compare the means of the included groups in a dummy-variable regression model?

Correct AnswerverifiedShow Answer

Why is the number of dummy variables to be entered into the regression model always equal to the number of groups (g) minus 1 (g−1) ?

Correct AnswerverifiedC

Correct Answer
verified
A

Correct Answer
verified
A

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
C